nsBaseWidgetAccessible.h

/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- *//* ***** BEGIN LICENSE BLOCK ***** * Version: MPL 1.1/GPL 2.0/LGPL 2.1 * * The contents of this file are subject to the Mozilla Public License Version * 1.1 (the "License"); you may not use this file except in compliance with * the License. You may obtain a copy of the License at * http://www.mozilla.org/MPL/ * * Software distributed under the License is distributed on an "AS IS" basis, * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License * for the specific language governing rights and limitations under the * License. * * The Original Code is mozilla.org code. * * The Initial Developer of the Original Code is * Netscape Communications Corporation. * Portions created by the Initial Developer are Copyright (C) 1998 * the Initial Developer. All Rights Reserved. * * Contributor(s): * John Gaunt (jgaunt@netscape.com) * * Alternatively, the contents of this file may be used under the terms of * either of the GNU General Public License Version 2 or later (the "GPL"), * or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"), * in which case the provisions of the GPL or the LGPL are applicable instead * of those above. If you wish to allow use of your version of this file only * under the terms of either the GPL or the LGPL, and not to allow others to * use your version of this file under the terms of the MPL, indicate your * decision by deleting the provisions above and replace them with the notice * and other provisions required by the GPL or the LGPL. If you do not delete * the provisions above, a recipient may use your version of this file under * the terms of any one of the MPL, the GPL or the LGPL. * * ***** END LICENSE BLOCK ***** */#ifndef _nsBaseWidgetAccessible_H_#define _nsBaseWidgetAccessible_H_#include "nsAccessibleWrap.h"#include "nsHyperTextAccessibleWrap.h"#include "nsIContent.h"class nsIDOMNode;
/** * This file contains a number of classes that are used as base * classes for the different accessibility implementations of * the HTML and XUL widget sets. --jgaunt *//** * Leaf version of DOM Accessible -- has no children */00057class nsLeafAccessible : publicnsAccessibleWrap
{
public:
nsLeafAccessible(nsIDOMNode* aNode, nsIWeakReference* aShell);
NS_DECL_ISUPPORTS_INHERITED
NS_IMETHOD GetFirstChild(nsIAccessible **_retval);
NS_IMETHOD GetLastChild(nsIAccessible **_retval);
NS_IMETHOD GetChildCount(PRInt32 *_retval);
NS_IMETHOD GetAllowsAnonChildAccessibles(PRBool *aAllowsAnonChildren);
NS_IMETHOD GetChildAtPoint(PRInt32 aX, PRInt32 aY, nsIAccessible **aAccessible)
{ NS_ENSURE_ARG_POINTER(aAccessible); NS_ADDREF(*aAccessible = this); return NS_OK; } // Don't walk into these
};
/** * A type of accessible for DOM nodes containing an href="" attribute. * It knows how to report the state of the link ( traveled or not ) * and can activate ( click ) the link programmatically. */00075class nsLinkableAccessible : public nsHyperTextAccessibleWrap
{
public:
enum { eAction_Jump = 0 };
nsLinkableAccessible(nsIDOMNode* aNode, nsIWeakReference* aShell);
NS_DECL_ISUPPORTS_INHERITED
// nsIAccessible
NS_IMETHOD GetNumActions(PRUint8 *_retval);
NS_IMETHOD GetActionName(PRUint8 aIndex, nsAString& aName);
NS_IMETHOD DoAction(PRUint8 index);
NS_IMETHOD GetValue(nsAString& _retval);
NS_IMETHOD TakeFocus();
NS_IMETHOD GetKeyboardShortcut(nsAString& _retval);
// nsIHyperLinkAccessible
NS_IMETHOD GetURI(PRInt32 i, nsIURI **aURI);
// nsAccessNodevirtual nsresult Init();
virtual nsresult Shutdown();
// nsAccessiblevirtual nsresult GetStateInternal(PRUint32 *aState, PRUint32 *aExtraState);
protected: /** * Return an accessible for cached action node. */
already_AddRefed<nsIAccessible> GetActionAccessible();
/** * Cache action node. */virtualvoidCacheActionContent();
nsCOMPtr<nsIContent> mActionContent;
PRPackedBool mIsLink;
PRPackedBool mIsOnclick;
};
/** * A simple accessible that gets its enumerated role passed into constructor. */00121class nsEnumRoleAccessible : publicnsAccessibleWrap
{
public:
nsEnumRoleAccessible(nsIDOMNode* aNode, nsIWeakReference* aShell, PRUint32 aRole);
virtual ~nsEnumRoleAccessible() { }
NS_DECL_ISUPPORTS_INHERITED
NS_IMETHODIMP GetRole(PRUint32 *aRole) { *aRole = mRole; return NS_OK; }
protected:
PRUint32 mRole;
};
#endif